Automatic blow molding machine supplier introduces the common problems and solutions when the product works
Release time:
2023-01-17
The supplier of automatic blowing machine tells you the solutions to the common problems and failures of automatic blowing machine when blowing bottles. Bursting.
Cause: 1. Bottle bottom is too thin due to too high temperature. 2. Blowing time is too short.
Solution: 1. Adjust the temperature of the bottle bottom 2. Extend the delayed blowing time
The parting line is flat.
Reason: During the blowing process, the gas cannot be discharged from the venting hole in time, and the thin layer of material forming the bottle wall blocks the venting hole.
Solution: 1. correctly adjust the mold clearance 2. control the air flow with high pressure air valve 3. improve the design structure
There are wrinkles on the bottom.
Cause: Insufficient blowing pressure 1 for outer wrinkles, too many tension rods, pressing the material down;
Internal wrinkles are common. Overheating of the head end of the preform or delayed stretching pressure at the start.
SOLUTION: 1. Make sure that the blow 1 on the mold is consistent and steady. 2. Do not overheat the head end of the bottle blank. 3. Make sure that the delay from the start of stretching to the entry of the blow 1 is not too long.
Hot bottles.
Cause: Bottles are overheating, causing recrystallization to occur inside or outside the preform, resulting in bottle explosion.
Solution: 1. Stretching time too long 2. Lowering of the cooling plate
Uneven segmental grams (too long neck).
Cause: 1. The stretching rod is gradually cooled by stretching from bottom to top. The material is very thin and cools faster.
Solution: 1. Adjust the position of the hot spot to solve the body of the prefabricated part 2. Adjust the position of the cooling plate
Bottom eccentricity.
Cause: 1. Conveying and alignment problem 2. Rear door not concentric with bottle
Solution: 1. Adjust the delivery and alignment of the preform mold 2. Pressure setting of the tension lever is too low
3. Blowout 1 pressure is too high, too soon. 4. Tension rod pad is not set properly.
Pearling - Hair on the foot.
Cause: The root cause is a cold bottle. Stretching beyond the natural stretch limit leads directly to stretching of the structure around the bottle.
Tears are formed and the resulting tear spots become visible as beading after reflection.
Automatic bottle blowing machine suppliers tell you the solution: 1. Make sure the bottom of the bottle is in the middle position; 2. Reduce the speed of the blowing machine;
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